Whole numbers are numbers 0, 1, 2, 3, 4, and so on. They include all the counting numbers and 0.
Tools of the trade
A number line is a line (or line segment or ray) on which numbers are assigned points. It helps us see numbers in relation to each other. The arrow shows that they go on without end.
On this number line showing whole numbers, we can see that 3 < 4 because 3 is closer to 0.
See also counting number.